A new myth says volume buttons and mute switch on iPhone 4S are in a slighly different position, meaning current iPhone 4 cases does not fix, plus the supposedly fixed 4S antenna can not be used on the iPhone 4. Is this myth confirmed, plausibe or busted?
Meh I would love to put a 3GS hardware inside a 1st gen aluminum case :D
What about the compass? Is it integrated to GPS or is a dedicated IC?